Exhibit 21.1 LENNOX INTERNATIONAL INC. SUBSIDIARIES AS OF JANUARY 1, 2001 Jurisdiction Name Ownership of Inc. Lennox Industries Inc. 100% Iowa SEE ANNEX A Heatcraft Inc 100% Mississippi Frigus-Bohn S.A. de C.V 50% Mexico LGL de Mexico, S.A. de C.V 1% Mexico Lennox Participacoes Ltda 1% Brazil Frigo-Bohn do Brasil Ltda 99% Brazil Heatcraft do Brasil Ltda 84.47% Brazil SIWA S.A 100% Uruguay Livernois Engineering Co. 100% Michigan Heatcraft Advanced Technologies Inc. 100% Delaware Heatcraft Heat Transfer Inc. 100% Delaware Advanced Distributor Products LLC 100% Delaware Heatcraft Refrigeration Products LLC 100% Delaware Armstrong Air Conditioning Inc. 100% Ohio Jensen-Klich Supply Co. 100% Nebraska Armstrong Distributors Inc. 100% Delaware Heatcraft Technologies Inc. 100% Delaware Strong LGL Colombia Ltda 50% Colombia LGL Peru S.A.C 10% Peru Alliance Compressor Partnership 24.5% Louisiana LPAC Corp. 100% Delaware Excel Comfort Systems Inc. 100% Delaware Allied Air Enterprises Inc. 100% Delaware Service Experts Inc. 100% Delaware SEE ANNEX B Lennox Inc. 100% Canada Lennox Canada Inc. 100% Canada SEE ANNEX C National Air Systems Inc. 100% California Lennox Global Ltd. 100% Delaware SEE ANNEX D ANNEX A TO EXHIBIT 21.1 LENNOX INDUSTRIES INC. SUBSIDIARIES Jurisdiction Name Ownership of Inc. Lennox Industries (Canada) Ltd. 100% Canada LHP Holding Inc. 100% Delaware Superior Fireplace Company 100% Delaware Marco Mfg., Inc. 100% California Marcomp Inc. 100% California Hearth Trends Inc. 100% Washington Securite Cheminees International Ltee 100% Canada SARL Cheminees Securite 100% France Security Chimneys UK Limited 100% UK Security USA 100% Firecraft Technologies Inc. 100% Delaware The Earth Stove, Inc. 100% Oregon Products Acceptance Corporation 100% Iowa Lennox Manufacturing Inc. 100% Delaware Lennox Finance Inc. 100% Canada ANNEX B TO EXHIBIT 21.1 SERVICE EXPERTS INC. SUBSIDIARIES The following are all organized in the state indicated and owned 100% by Service Experts Inc.: A. Frank Woods and Sons LLC - Virginia AC/DAC, L.L.C. - Tennessee Academy Air Service Experts, Inc. - Tennessee Ainsley & Son Heating LLC - Ohio Air Conditioning and Heating, LLC - Tennessee Air Engineers, Inc. - Florida Air Experts LLC - Georgia Air Experts LLC - Ohio Air Systems of Florida, Inc. - Florida Aire-Tech LLC - Ohio Airmaster Heating & Air Conditioning LLC - Michigan Allbritten Plumbing, Heating and Air Conditioning Service, Inc. - Tennessee Alliance Mechanical Heating & Air Conditioning, Inc. - California Andros Refrigeration LLC - Arizona Andy Lewis Heating & Air Conditioning LLC - North Carolina Andy Lewis Heating & Air Conditioning, Inc. - Georgia Arrow Heating & Air Conditioning, Inc. - Wisconsin Artic Aire of Chico, Inc. - California Atlantic Air Conditioning and Heating LLC - Maryland Atmostemp LLC - New Jersey Austin Brothers, Inc. - Tennessee Barlow Heating and Air Conditioning LLC - Delaware Bartels Heating & Air Conditioning LLC - Colorado Becht Heating & Cooling LLC - Delaware Ben Peer Heating LLC - New York Berkshire Air Conditioning LLC - Tennessee Berkshire Heating & Cooling LLC - Delaware Blue Springs Heating & Air Conditioning LLC - Missouri Broad Ripple Heating & Air Conditioning Inc. - Indiana Burnsville Heating & Air Conditioning LLC - Minnesota C. Iapaluccio Company LLC - Delaware C. Woods Company LLC - Delaware Calverley Air Conditioning & Heating LLC - Delaware Chanin Air LLC - Florida Chief/Bauer Heating & Air Conditioning LLC - Delaware Claire's Air Conditioning and Refrigeration, Inc. - Tennessee Climate Control LLC - Alabama Climate Design Systems LLC - Tennessee Climate Masters Service LLC - Colorado Coastal Air Conditioning Service LLC - Georgia Comfort Masters Heating & Cooling LLC - Delaware Comfort Tech Cooling & Heating LLC - Tennessee Comfortech, Inc. - Tennessee Contractor Success Group, Inc. - Missouri Controlled Comfort LLC - Nebraska Cook Heating & Air Conditioning LLC - Michigan Cook Heating and Air Conditioning LLC - Delaware Cool Breeze LLC - Ohio Cool Power LLC - New York ANNEX B TO EXHIBIT 21.1 SERVICE EXPERTS INC. SUBSIDIARIES (CONT'D.) D.A. Bennett LLC - New York Dan Jacobs Heating & Cooling LLC - Pennsylvania Davis the Plumber LLC - New Mexico Dial One Raymond Plumbing, Heating & Cooling, Inc. - Tennessee DiMarco Mechanical LLC - Ohio Dodge Heating & Air Conditioning LLC - Georgia Doler Plumbing & Heating LLC - Delaware Economy Heating & Air Conditioning LLC - Pennsylvania Edison Heating and Cooling LLC - New Jersey Epperson LLC - South Carolina Eveready LLC - Virginia Falso Service Experts LLC - New York Fras-Air Contracting LLC - New Jersey Freschi Air Systems, Inc. - Tennessee Frosty Mechanical Contractors LLC - Delaware Future Acquisition Sub, Inc. - Tennessee Gables Air Conditioning LLC - Florida General Conditioning LLC - New Jersey General Conditioning Plumbing, Inc. - New Jersey George B. Givins Company, Inc. - Tennessee Getzschman Heating & Sheet Metal Contractors LLC - Nebraska Golden Seal Heating & Air Conditioning LLC - Delaware Gordon's Specialty Company LLC - Oklahoma Gray Refrigeration LLC - Delaware Greenwood Heating & A/C LLC - Washington Gregory's Plumbing Co. LLC - Oklahoma H.S. Stevenson & Sons LLC - Ohio Holmes Sales & Service LLC - Iowa Industrial Building Services, Inc. - Florida International Service Leadership Inc. - Delaware Jack Nelson Co. LLC - Oklahoma Jansen Heating and Air Conditioning LLC - Delaware Jebco Heating & Air Conditioning LLC - Colorado JM Mechanical LLC - Delaware John P. Timmerman Co. LLC - Ohio K & S Heating, Air Conditioning & Plumbing LLC - Minnesota Kiko Heating & Air Conditioning LLC - Ohio Klawinski LLC - Delaware Knochelmann Plumbing, Heating & Air LLC - Kentucky Kozon LLC - Tennessee Kruger's Heating & Air Conditioning LLC - Delaware Lake Arbor Heating LLC - Colorado Lee Voisard Plumbing & Heating LLC - Ohio Local Furnace LLC - Colorado Marco Cooling and Refrigeration LLC - Florida Mathews Heating & Air Conditioning LLC - Tennessee Matz Heating & Air Conditioning LLC - New York McPhee Service Experts, Inc. - Colorado Midland Heating & Air LLC - South Carolina Miller Refrigeration, A/C, & Htg. Co. - North Carolina National Air Systems, Inc. - California Neal Harris Heating, Air Conditioning & Plumbing LLC - Missouri Norrell Heating and Air Conditioning LLC - Alabama Pardee Refrigeration LLC - South Carolina Parker-Pearce Service Experts LLC - Maryland ANNEX B TO EXHIBIT 21.1 SERVICE EXPERTS INC. SUBSIDIARIES (CONT'D.) Parrott Mechanical, Inc. - Idaho Peachtree Service Experts LLC - Georgia Peitz Heating and Cooling LLC - South Dakota PTM Enterprises LLC - Georgia R&M Climate Control LLC - Tennessee Roland J. Down LLC - New York Rolf Griffin Heating & Air Conditioning LLC - Delaware Russell Mechanical LLC - Delaware Ryan Heating LLC - Missouri S & W Air Conditioning LLC - Tennessee San Antonio Air Conditioning LLC - Delaware Sanders Indoor Comfort LLC - South Carolina Sanders Service Experts, Inc. - Tennessee Sedgwick Heating & Air Conditioning LLC - Minnesota SEI Management Company, LLC - Tennessee SEIIN GP, Inc. - Indiana SEITN GP, Inc. - Tennesse Service Experts DFW LLC - Tennessee Service Experts LLC - Florida Service Experts of Arkansas LLC - Arkansas Service Experts of Clearwater, Inc. - Tennessee Service Experts of Denver LLC - Colorado Service Experts of Imperial Valley, Inc. - California Service Experts of Indiana, L.P. - Tennessee Service Experts of Indianapolis, Inc. - Indiana Service Experts of Northeast Louisiana LLC - Louisiana Service Experts of Northwest Louisiana LLC - Louisiana Service Experts of Palm Springs, Inc. - California Service Experts of Raleigh LLC - North Carolina Service Experts of Salt Lake City LLC - Tennessee Service Experts of the Bay Area, Inc. - California Service Experts of Utah LLC - Delaware Service Experts Services, LLC - Tennessee Service Now, Inc. - California Shumate Mechanical LLC - Georgia Steel City Heating & Air LLC - Alabama Strand Brothers LLC - Tennessee Strogen's HVAC LLC - New Hampshire Sunbeam Service Experts LLC - New York Sylvester's Corp. - Indiana Sylvester's, L.P. - Tennessee Teays Valley Heating and Cooling LLC - West Virginia The McElroy Service Company LLC - Nebraska TML LLC - Idaho Total Comfort Specialists - California Triton Mechanical LLC - New York Valentine Heating & Air Conditioning LLC - Georgia Venture International, Inc. - Tennessee Vogt Heating & Air Conditioning LLC - Minnesota Wangsgaard A-Plus, Inc. - Utah Wesley G. Wood LLC - Pennsylvania ANNEX C TO EXHIBIT 21.1 LENNOX CANADA INC. SUBSIDIARIES The following are all organized in Canada and owned 100% by Lennox Canada Inc.: Bradley Air Conditioning Limited Valley Refrigeration Limited Dearie Contracting Inc. Dearie Martino Contractors Ltd. Foster Air Conditioning Ltd. Bryant Heating & Cooling Co. Ltd. Bryant Newco Inc. Montwest Air Ltd. Fahrhall Mechanical Contractors Limited Arpi's Industries Canada Ltd. Arpi's Holdings Ltd. Advance Mechanical Ltd. ANNEX D TO EXHIBIT 21.1 LENNOX GLOBAL LTD. SUBSIDIARIES Name Ownership Jurisdiction of Inc. Lennox Global Asia-Pacific Pte Ltd 100% Rep. of Singapore Lennox Global (Wuxi) Co. Ltd. 100% China Fairco S.A 50% Argentina LGL Europe Holding Co. 100% Delaware SEE ANNEX E UK Industries, Inc. 100% Delaware LGL de Mexico, S.A. de C.V 99% Mexico Lennox Participacoes Ltda 99% Brazil Frigo-Bohn do Brasil Ltda 1% Brazil Strong LGL Dominicana, S.A 100% Dominican Republic Strong LGL Colombia Ltda 50% Colombia LGL Belgium S.P.R.L 0.4% Belgium LGL Thailand Ltd. 100% Thailand LGL Peru S.A.C 90% Peru LGL Australia (US) Inc. 100% Delaware SEE ANNEX F ANNEX E TO EXHIBIT 21.1 LGL EUROPE HOLDING CO. SUBSIDIARIES Name Ownership Jurisdiction of Inc. LGL Holland B.V 100% Holland Friga-Coil S.R.O 50% Czech Republic Ets. Brancher S.A 100% France Frinotec S.A 99.68% France LGL France S.A 100% France Herac Ltd. 100% United Kingdom SCI Groupe Brancher 100% France Hyfra Ind. GmbH 0.1% Germany LGL Germany GmbH 100% Germany Friga-Bohn Warmeaustauscher GmbH 100% Germany Hyfra Ind. GmbH 99.9% Germany Lennox Deutschland GmbH 100% Germany Lennox Global Spain S.L 100% Spain Lennox Refrigeration Spain S.A 90.1% Spain Aldo Marine 70% Spain Lennox Espana, S.A 100% Spain Redi sur Andalucia 70% Spain Lennox Climatizacao Lda 50% Portugal LGL Refrigeration Italia s.r.l 80% Italy LGL Polska Spzoo 100% Poland LGL Belgium S.P.R.L 99.6% Belgium Lennox Benelux B.V 100% Netherlands Lennox Benelux N.V 100% Belgium HCF Lennox Ltd. 100% United Kingdom Lennox Industries (UK) 100% United Kingdom Environheat Limited 100% United Kingdom Lennox Janka a.s 100% Czech Republic Friga Coil s.r.o 50% Czech Republic Janka Slovensko, s.r.o 100% Slovak Republic Ecoclima 15% ANNEX F TO EXHIBIT 21.1 LGL AUSTRALIA (US) INC. SUBSIDIARIES Jurisdiction Name Ownership of Inc. LGL Co Pty Ltd 100% Australia LGL Australia Investment Pty Ltd 100% Australia LGL Australia Finance Pty Ltd 10% Australia LGL Australia Finance Pty Ltd 90% Australia LGL Australia Holdings Pty Ltd 100% Australia Lennox Australia Pty. Ltd. 100% Australia LGL (Australia) Pty Ltd 100% Australia LGL Refrigeration Pry. Ltd 100% Australia James N Kirby Pty Ltd 100% Australia Kirby Refrigeration Pty. Ltd (Albury) 75% Australia Kirby Refrigeration Pty. Ltd (Sunshine Coast) 75% Australia Kirby Refrigeration Pty. Ltd (Gold Coast) 75% Australia Kirby Refrigeration Pty. Ltd (Tasmania) 75% Australia Kirby Refrigeration Pty. Ltd (Hobart) 100% Australia Refrigeration & Heating Wholesale Pty Ltd (Vid) 100% Australia Refrigeration & Heating Wholesale Pty Ltd (SA) 100% Australia R&H Wholesale Pty Ltd 100% Australia Kirby Refrigeration Pty. Ltd. (NT) 75% Australia Kirby Tubes & Contract Coils Pty Ltd 100% Australia Kirby Sheet Metal Pty Ltd 100% Australia Kirby Central Warehouse Pty Ltd 100% Australia Kulthom Kirby Public Company Limited 18% Australia Kulthom Control Company Limited 70% Australia Thai Sintered Products Co. Limited 44.4% Thailand Thai Compressor Manufacturing Co. Limited 25.5% Thailand Kulthom Kirby Foundry Co. Limited 100% Australia J.N.K. Pty Limited 100% Australia P.R.L. Pty Limited 100% Australia Kirby USA Inc. 100% North Carolina JNK Draughting Pty Limited 100% Australia P.R.L Sales Pty Limited 100% Australia Air Safe Pty Limited 100% Australia James N. Kirby Limited (NZ) 100% New Zealand